Painting is one of the most convenient and inexpensive ways to decorate a facade. All work can be done independently, and correctly selected colors will give the house an elegant and attractive look.
But in order for this species to remain as long as possible, the paint must be resistant to adverse influences, and first of all - to moisture. Waterproof paint will not be washed off by rain, will not peel off after a snowy winter, it will be easily cleaned of dirt, and the facade will always look like new.
The facade of a country house is painted with waterproof paint
What compositions are the most waterproof, and how to make the right choice among a huge variety of paintwork materials?
The facade of a private house is green and sage, waterproof paints for outdoor use are used
Paints and varnishes with increased resistance to moisture have a whole list of important qualities.
First of all, they give excellent protection to the walls: after painting, even highly absorbent surfaces absorb moisture much weaker, which means they less crack, rot and crumble (depending on the material). Fungi do not develop on dry walls, which also affects the durability of the building.
The paint protects the walls of the house from external influences
Under the influence of precipitation, ordinary paints are quickly washed off, fade, begin to peel off, as a result of which the surface immediately loses its appearance and the house seems unkempt. This will never happen with waterproof paints, if, of course, they are applied according to all the rules. Neither rain nor snow will do any harm to the coating, the color will remain as even and saturated as after application.
Particularly stable types of paints can perfectly tolerate direct contact with water for a long time. They are used in swimming pools, bathrooms and showers, on open balconies, as well as for painting plinths, foundations, basements.
Particularly resistant paint is used to paint the basement
The actual problem for the facades of houses is pollution. Dust, dirty splashes after rain, greasy soot from car exhaust constantly accumulate on the walls. If you choose waterproof paint for finishing, pollution will no longer be a big deal: the walls can be washed at least every day, and not only with plain water, but also with soapy water.
These paints are resistant to weak alkalis, any detergents and abrasion.
Waterproof paints are resistant to dirt
Painted facades of houses - photo
The market of modern paints and varnishes offers the consumer a huge amount of facade paints. All of them are more or less waterproof, therefore, when choosing, you should pay attention to other criteria - durability, resistance to fading, compatibility with the surface material.The best for facades are acrylic, cement, silicone and silicate paints, so let's consider their characteristics in more detail.
Ceresit CT 48.
The base of these paints - organosilicon compounds with a microporous structure that allows vapor molecules to pass through, but retains water molecules. Thanks to this, the coating allows the walls to "breathe" and does not absorb moisture at all. In addition, silicone paints perfectly fit on any prepared surface, and retain high adhesion throughout the entire period of operation. They withstand frosts, temperature changes, do not lose their qualities under the hot rays of the sun. Such compositions can have very bright intense colors, while the most saturated colors fade over time.
Paint for exterior use Silikona Grenli
Most silicone paints are water-soluble, but there are also compositions made on the basis of organic solvents ... They are less in demand, since they release toxic compounds during the drying process. In terms of elasticity, silicone paints are inferior to acrylic paints, and are less resistant to abrasion.
When cleaning the surface, do not use abrasive substances, so as not to damage the thin coating.
Ceresit CT 54
The basis of silicate paints is liquid glass to which silicon resins are sometimes added to improve performance. The composition also contains alkali-resistant fillers, lightfast pigments, various hardeners and other additives. These paints are intended for finishing mineral substrates: concrete, brick and stone walls, plastered surfaces. They penetrate deeply into the material and form a long-lasting, water-repellent and vapor-permeable coating.
Painted walls are less prone to dirt, easy to clean, and retain an attractive appearance for a long time. Such a coating is also immune to mold, fungi and other microorganisms.
Caparol Sylitol Minera paint
As for the color range, here silicate paints are noticeably inferior to silicone and acrylic paints, and bright saturated colors fade rather quickly in the sun. For this reason, it is recommended to give preference to muted pastel shades for wall decoration on the south side. Remains of paint cannot be stored, since after a day they form an insoluble dense precipitate as a result of the interaction of dyes and liquid glass.
The palette of facade paints
Acrylic paints deservedly use the largest in demand for outdoor decoration. They are made on the basis of acrylic resin and are intended for all organic and mineral substrates (except for lime and silicate).Acrylic paints have a low vapor permeability, but they are characterized by increased resistance to adverse effects, temperature extremes and abrasion. Their wide color palette includes a variety of bright colors that are UV resistant.
Acrylic paint Flugger Flutex 5
Water-soluble emulsions prevail on the market, but some paints are made on the basis of solvents.
They are more wear-resistant, and therefore are often used in the decoration of old facades, plinths, foundations and surfaces that are exposed to increased loads. Also, to improve performance, latex or silicone is added to the acrylic base.
One of the options offered on the domestic construction market, which has the proper quality
Latex paints have excellent elasticity and are suitable for substrates, prone to shrinkage. They are completely hydrophobic and can be cleaned several times with detergents. Acrylic-silicone compounds are slightly less elastic, but they have greater vapor permeability.
Facade acrylic paint
These compositions are a mixture of white cement, mineral additives, lime and colored pigments. They go on sale in the form of a dry powder, which is diluted with water immediately before application. The paints are intended for all types of substrates, except wood and metal, after application they form a very tough hard coating with high resistance to moisture.
Cement paint must be thinned
Unlike acrylic and silicone paints, cement paints are applied to damp surfaces, and after painting they are also moistened until the coating is completely cured. The setting takes place quickly, and the paint is prepared in small portions in order to have time to develop the entire volume.
Cement compositions have a low hiding power, so they are applied, as a rule, in two layers. When dry, they form a matte white finish. Tinting in soft pastel colors is also possible.
| This silicone paint is used for protective and decorative finishing of all types of mineral substrates. It is widely used for the restoration of old facades. |
It has excellent moisture resistance, can be applied at temperatures from -20 ° C to + 35 ° C. The composition is characterized by high hiding power, the coating does not fade, it can be easily cleaned from dirt with any detergents. The paint belongs to the professional, therefore it has a high cost
Ceresit CT 54
|The paint is made on a silicate base, intended for interior and exterior finishing of mineral surfaces. In addition to being hydrophobic, it is resistant to weathering and fungi, and is environmentally friendly.Perfectly combined with renovation plasters, effective for finishing foundations, plinths and basements|
Dufa Fassadenfarbe 90
| Water-soluble acrylic based compound. |
The paint has excellent covering ability, dirt and water repellent properties. Designed for finishing external mineral surfaces - concrete, brick, plaster
HUSKY Super Paint Exterior
|High performance acrylic compound. Refers to premium class paintwork materials, ideal for facades in regions with difficult climatic conditions. The paint is hydrophobic, resistant to dirt, ultraviolet light, sharp temperature changes and freezing|
Dulux Classic Color facade
| Fast drying, acrylic based. Contains anti-fungal additives, UV and abrasion resistant, durable. |
Suitable for all types of mineral surfaces
A lot depends on the choice of paint, but the application technology is no less important. Everything should be taken into account here - the conditions of temperature and humidity, the quality of the preparation of the substrate, the tool for work, the interlayer drying intervals and much more. Only in this way the result will be the most effective and durable.
Rollers, brushes and pneumatic spray guns are used to apply paint.
High-class W-71 high atomization gun
Pneumatic paint sprayer
The last option is the most convenient and significantly reduces the time of work, but it is not suitable for every paint.
This information is always indicated by the manufacturer, so when buying, be sure to read the instructions on the package. Brushes are most suitable for wood and brick walls, as they allow you to thoroughly grind the paint over the surface, fill in all the seams and shallow recesses.
Paint brushes for painting
As for the rollers, it is better to use them on flat concrete and plastered walls, especially if the finishing area is large enough.
How to choose a paint roller
The amount of paint should be calculated in advance so that you do not have to interrupt work and go to the store for the missing can. As a rule, on the label, the manufacturer indicates the consumption rate per m2 for one-coat application.
To find out the total volume, you need to multiply the total wall area by the indicated consumption and multiply by the number of layers (usually 2 or 3 paint coats are required). Then you need to add another 5-7% to the resulting value, since some of the paint will remain on the painting tray, roller, you may need to touch up individual places.
Pay attention to the characteristics of the paint, they are indicated on the packaging
In addition to paint and painting tools, you will definitely need a primer, masking tape, solvent (if the paint is solvent-borne) or pure water.
To prepare the base, you will need a metal brush, sandpaper or grinder with an abrasive nozzle, a spatula or trowel, repair mortar for sealing cracks.
Pneumatic airbrushes, spray guns, texture guns
The facade of the house before renovation
The appearance of the facade before painting
Remove the platbands, gutters, lighting devices and everything else that may interfere. If there are external sockets or switches on the facade, they must be de-energized.
Step 2. Using a grinder or coarse sandpaper, sand every centimeter of the wall to remove dirt, roughness, unevenness.
The old coating must be removed
Removing the old paint
Wall after removing old paint
Remove dust, carefully examine the surface. In the log house, it is necessary to check the tightness of the joints between the joints, if necessary, re-drill them and treat them with a sealant. In the planking, if necessary, loose boards are strengthened, rotten or cracked ones are replaced, small cracks and chips are filled with wood putty.
Tip. It is recommended to choose an acrylic sealant - it adheres better to wood, perfectly resists shrinkage deformations and lends itself to staining.
The paint does not stick to silicone sealant, and unpainted joints spoil the whole appearance of the facade.
Step 4. The next step is priming. The primer must be antiseptic, it can also contain flame retardants. The composition is applied with a brush along the fibers, carefully processing all the grooves, joints, seams, ends of the logs.
If the wood is porous and highly absorbent, after the first layer of soil has dried, a second one is applied.
Applying a primer
Step 5. Cover with foil or masking tape those areas that should not paint, such as door and window frames. The paint is stirred well, if necessary, a colored pigment is added and brought to homogeneity.
First, take a narrow brush and paint over the joints, seams, corner sections. The brush is dipped to half the length of the pile, the paint is rubbed well along the fibers.
Step 7. After working out the joints, the brush is changed to a wider one and proceeds to the main painting.
Painting the facade
Painting a wooden house
The layer should be thin and even, but do not try to achieve a uniform color in one go.
Individual areas can absorb paint with varying intensity, which is why a second coat of paint is needed, and sometimes a third.
Paint over the facade evenly
Apply a second coat if necessary
When the surface is no longer sticky when touched, you can paint the walls again in the same order: first seams and corners, then even areas. The paint should be applied in a thin layer, avoiding sagging and sagging.
House after restoration
The facade of the house before painting
The base should be perfectly flat and smooth, because the paint is applied in a thin layer and all defects are clearly visible. If the walls have been plastered for a long time, you need to check the quality of the coating over the entire area, see if there are any delamination, blisters, cracks on the surface.
The presence of such defects requires removing the plaster and applying a fresh leveling mortar. At the same stage, the walls are insulated with foam plastic or EPSP plates.
Crack on the plaster
Checking the strength of the plaster
Cleaning the plastered facade from dirt
In case of minor damage, it is not necessary to remove the plaster layer, especially if it is very tight. The walls need to be treated with a grinder with a grinding attachment, small cracks must be repaired with cement mortar.
After that, the base is cleaned of dust and covered with deep penetration soil.
If the compound absorbs too quickly, another coat of primer is needed. When the walls are dry, you can start painting.
Cover the windows with foil to prevent paint from getting on them
Step 1 . Stir the paint thoroughly and pour a part into a paint bath. Dip the roller and roll it well so that the paint evenly impregnates the material.
Thinning and stirring the paint
Step 2. Use a narrow brush to paint over corner joints, areas around openings, other hard-to-reach places. After that, they take a roller and begin to roll it over the surface with uniform movements from top to bottom or horizontally. The tool must be pressed with the same force, then the paint lays down as evenly as possible.
Painting the plastered facade
After the base layer has dried, apply the second one. To avoid streaking, this layer should be applied perpendicular to the previous one. Be sure to make sure that there are no sags and streaks.
Example of applying a second coat of paint with a spray gun
If the facade color is still uneven after drying, a third coat of paint will be needed, but usually quite two are enough. Here a lot depends on the covering ability of the coloring composition, therefore, when choosing, pay attention to the degree of covering ability of the paint.
In order for the coating to gain the necessary strength, the first few days after painting, the walls should not be exposed to moisture, freezing or excessive overheating in the sun. For this reason, finishing should be done in warm, but not hot, dry weather in the absence of wind.
Wall of the house after painting
Uniform painting of the facade in white
Posted By: Work Style |04, Nov 2020
Posted By: Work Style |10, Nov 2020
Posted By: Work Style |12, Nov 2020
Posted By: Work Style |09, Nov 2020
Posted By: Work Style |02, Nov 2020